for digging trenches or ditches

Introduced: September 1968

Last revised: January 2006

Full Title

Dredgers or soil-shifting machines for special purposes > for digging trenches or ditches

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
Subclass:: DREDGING; SOIL-SHIFTING

Filing statistics

IPC E02F 5/02 belongs to the parent subclass E02F, which recorded 99,408 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,460 in 2013 to 10,933 in 2023 (+69%), peaking at 12,625 applications in 2020. The most active applicants in class E02 are KOMATSU (3,549 applications), CATERPILLAR (2,893 applications) and HITACHI CONSTRUCTION MACHINERY COMPANY (2,390 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

excavating CUTTINGSsoil-shifting apparatus for digging DITCHESexcavating DRAINSsoil-shifting apparatus for digging TRENCHES

6 direct subcodes

Child Classifications

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E02F 5/04 with digging screws
E02F 5/06 with digging elements mounted on an endless chain
E02F 5/08 with digging wheels turning round an axis
E02F 5/1 with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
E02F 5/12 with equipment for back-filling trenches or ditches
E02F 5/14 Component parts for trench excavators, e.g. indicating devices

Top Applicants

Top 10 applicants by patent filingsfor class E02, 2013–2023, worldwide · Source: EPO PATSTAT

KOMATSU JP 3,549
CATERPILLAR US 2,893
HITACHI CONSTRUCTION MACHINERY COMPANY JP 2,390
HITACHI CONSTRUCTION MACHINERY COMPANY 2,340
POWERCHINA HUADONG ENGINEERING CORPORATION 2,336
CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 2,174
SGCC(STATE GRID CORPORATION OF CHINA) 2,119
HOHAI UNIVERSITY 1,821
KOMATSU 1,775
POWERCHINA GUIYANG ENGINEERING CORPORATION 1,725